Further licensing work

- Fix several inaccuracies with several files not marking Dan's
   authorship. Most of these are new files, where the code was moved from
   somewhere else:
   - In the public API:  IDynamicLuaObject, ILuaAPI, TaskCallbakc,
     IDynamicPeripheral, UpgradeBase
   - In the ROM: fs, http, require

 - Do not mark Dan as an author for entirely new code. This affects
   DetailHelpers, DropConsumer, FluidData, InventoryMethods, ItemDetails,
   MonitorRenderState, NoTermComputerScreen, Palette, PlatformHelperImpl,
   UploadFileMessage, the Terminal tests, and any speaker-related files.

 - Relicence many files under the MPL where we have permission to do
   so. See #1339 for further details.

Thank you to everyone who has contributed so far! Cannot overstate how
appreciated it is <3.

projects/core-api/src/main/java/dan200/computercraft/api/lua/IDynamicLuaObject.java

@@ -1,5 +1,5 @@
-// SPDX-FileCopyrightText: 2020 The CC: Tweaked Developers
-
+// Copyright Daniel Ratcliffe, 2011-2022. This API may be redistributed unmodified and in full only.
+//
 // SPDX-License-Identifier: LicenseRef-CCPL
 
 package dan200.computercraft.api.lua;

projects/core-api/src/main/java/dan200/computercraft/api/lua/ILuaAPI.java

@@ -1,5 +1,5 @@
-// SPDX-FileCopyrightText: 2017 The CC: Tweaked Developers
-
+// Copyright Daniel Ratcliffe, 2011-2022. This API may be redistributed unmodified and in full only.
+//
 // SPDX-License-Identifier: LicenseRef-CCPL
 
 package dan200.computercraft.api.lua;

projects/core-api/src/main/java/dan200/computercraft/api/lua/TaskCallback.java

@@ -1,5 +1,5 @@
-// SPDX-FileCopyrightText: 2020 The CC: Tweaked Developers
-
+// Copyright Daniel Ratcliffe, 2011-2022. This API may be redistributed unmodified and in full only.
+//
 // SPDX-License-Identifier: LicenseRef-CCPL
 
 package dan200.computercraft.api.lua;

projects/core-api/src/main/java/dan200/computercraft/api/peripheral/IDynamicPeripheral.java

@@ -1,5 +1,5 @@
-// SPDX-FileCopyrightText: 2020 The CC: Tweaked Developers
-
+// Copyright Daniel Ratcliffe, 2011-2022. This API may be redistributed unmodified and in full only.
+//
 // SPDX-License-Identifier: LicenseRef-CCPL
 
 package dan200.computercraft.api.peripheral;